Chain-link.



W. D. TUSTEN.

. CHAIN LINK.

APPLIOATION FILED my 15,1912.

Patented Aug. 27, 1912.

mamaa,

; 7 WITNESSES INVENTOR WaHer D. Tusi'en BY W ATTORNEYS comprises certain improvements ing drawings of the city of New York, borough of am n swag PATENT or'rion.

WALTER 1). western, on NEW "roan, 1v. Y.

CHAIN-LINK.

Specification of Letters Patent.

Application filed May 15, 1912. Serial No. 697,416;

To all whom it may concern:

Be it known that. I, WALTER D. Tusrnm. a citizen of the United States, and a resident Brook;

lyn, in the county. of Kings and State New York, haveinvented a new and Im-" proved Ghain-Link,' .of which the following and exact description. v v

in ornamental chains, and particularly, to the construction of the-links thereof, and it I in. the structure vof the chain shown-and described in my prior application Serial Number 669,295, filed January 3, 1912 and allowed April 16, 1912.

Reference is to had tothe accompany- V forming a part of this speciiication, infwhich the same characters of reference. indicatethe same parts'in allthe views.

Figure l is a front elevation of a chain intended to be worn on the arm, made inacchain is worn is in a I section of Figs. 2 and creased when it is to cordance with my invention;'Fig.2 is a longitudinal section view of one of the extensible links of the same, the plane of section being vertical when the arm on which the horizontal position; 2, showing Fig. 3 is a view similar to Fig. the parts of the Fig. 4 is a longitudinal sectional viewtaken on a plane at right-angles to the plane of 3; Fig. 5 is Jperspective view of one section of the extensible link'shown in Figs. 3 and 4; and Fig. 6 is a v perspective view of the other section of the above-mentioned extensible link.

My improved chain comprises a number of links made insections movable with respect to distended whenever desired; as, for instance, to permit the length of the chain to be inbe used in the form of a bracelet or armlet, so as to enable it to he slipped over th'c hand into position.

In the form shown in Fig. 1, the numeral 1 indicates a number of solid links or gem settings carrying stones 2 held in place by means of cup-shaped flanges or rings 3, which are soldered to the settings 1. These link in extended position;

each other to permit the chain to be.

soldered links or" settings alterna-tewith the extensible links which are'shownas having eyelets-,4 attheir opposite ends, these eyelets extending into the members 1 and engaging projections on the interior of the .samein a manner that: need. not here be described, so as to cause. all of the links to be movably connected. together. i

The numeral 5 indicates a watch. or other ornamentwhich is. secured to the ends ofthe Patented Aug. 2'7, 1912.

chain; and when the chain is tops put on the wrist it is merely slipped ovrthe hand.

The. sections of. the extensible links give to the required extent, and after being put in place the chain contracts and embraces the arm orwrist firmly, so as to remain in position thereon. 1- i 3 The extensible links which carry the eyelets 4. each comprises .a box-like section 6 having open-sides. and closed ends 7 One of these .ends' 'carries an eyelet 4, and the other end is recessed at its sides, as shown at 8, and from the inner. face of this recessed side projects a shank 9. This shank 9 serves to receive a spiral spring lO which forms the means for-making the link extensible, so as to enable the chain to be lengthened or shortened; Thisv hollow box-like section 6 is received between the arms of a U-shaped section comprising a base 11 and arms '12. These arms 12 have perforations 13 in their outer ends, and through these perforations and the open. sides or the box likesection. 6 passes g in 14. One end ofthe spring 10 which 1' located inside of the section 6,

abuts against, the pin- 14, and a cons derable of this spring surportion of the length rounds the shank 9 and abuts against the notched side 7 ,to which the shank 9 is secured. The shank 9 therefore serves as a "sort of base or guide for the spring 10, and

it also serves the purpose of a stop for the pin 14, limiting the'relative movement of the sections of the extensible link,'the parts being so designed that the end of the shank 9 will engage the pin 14 to prevent further movement of the sections before the spring 10 is compressed to such an extent asto be solid. In this way I avoid overcompressing the spring 10, and thus make it lastfmuch an axis,

longer in chains of this sort before its resiliency becomes sensibly diminished.

On the inner surface of the arms 12 of the U-shaped links are arranged longitudinally-extending projections in the form of ribs 15. These ribs are preferably two in number, and they are formed by stamping the metal of which the U-shaped section is composed, thus making corresponding longitudinal depressions or grooves 16 on the outer faces of the arms 12.- The distance between the opposite edges of these ribs is equal to the width of the notches or recesses 8; and when the box-like section 6 is fitted to the U-shaped section the notches 8 and the ribs 15 come into engagement with each other, the inner end of the section 6 thus has a sliding fit with the arms of the U-shaped section which receives it. The sections of each extensible link therefore engage each other at two separated points on each side of the same, one of these marked by the pin 14 and the other of these points being marked by the location of the notch 8 in the inner end of the section 6, and thus any tendency of the U-shaped section to rotate about the pin 14 as an axis, or of the hollow box-like section 6 to rotate about is entirely eliminated. Therefore, the two sections of my extensible link are at all times keptin substantial alinement with each other in all relative positions of the two sections composing the same.

From the above description it will appear that I have produced asuperior article of the kind described, comprising means for limiting the relative movement of the sections of which the extensible links are composed, and guiding the resilient means by which the links are controlled. 'The means for limiting the movement and guiding the resilient means in question comprises essentially the shank 9, which prevents the spring 10 from becoming compressed to such an extent as to be made solid, this shank 9 also serving as a sort of guide for the spring and preventing it from flexing or curving when the links are extended and the spring compressed by forcing the ends thereof toward each other Furthermore, the longitudinally-arranged ribs on the inner faces of the arms 12 of the U-shaped section of the links has a sliding engagement, as above noted, with the inner ends of the box-like sections 6, and these ribs cooperate with the pin 14. serving in a very ctlicient way to maintain the alinement of the sections when the links comprising the springs 10 are extended or contracted in practice. Further more, all of the working parts of the links are completely inclosed, and are thus tected from dust a of injury.

I wish to have it understood that the prod dirt and any likelihood points being drawings and description of my invention are illustrative only, and I do not care to be limited to the exact details of construction shown, except in so far as is-indicated in the accompanying claims; and I also desire to have it understood that while my chain is designed mainly for ornamental use, it is by no means limited to such uses, as will be readily perceived.

. Having thus described my invention, I

claim as new and desire to secure by Letters.

Patent:

1 1. In a link of the kind described, the combination of a pair of extensible sections, means carried by one of said sections for engaging the other section, resilient means for engaging said sections to permit the same to have relative movement, and one or more longitudinally-arranged ribs carried by the first-named section, said second section having a .notch to receive said ribs in sliding engagement in position to clear said resilient means, said ribs and said first named means serving to keep the said sections at all times in alinement with each other.

2. In a link of the kind described, the combination of a U-shaped section, a hollow box-like section having open sides received between the arms of said U-shaped section, the inner end ofsaid box-like sect-ion having recesses in its opposite lateral edges, a pin mounted in the ends of the arms of the U- shaped section passing through the other section, resilient means engaging said pin and the recessed end of the box-like section to permit the said sections to have relative movement, and one or more longitudinallyextending ribs arranged on the inner faces of the arms of the U-shaped section and having a sliding fit with the notches in the inner end of the box-like section, whereby the said sections will be retained at all times in substantial alinement.

3. In a link of the kind described, the combination of a pair of extensible sections, a pin carried by one of said sections and engaging the other section, a longitudinallyextending shank carried by the other section against which said pin abuts to limit the movement of said sect-ions, and resilient means carriedby said other section and surrounding said shank, said means abutting against said pin at one end and against the end of the other sect-ion at its opposite end.

4. In a link of the kind described, the combination of a U-shaped section, a hollow box-like section having open sides received 7 between the arms of the U-shaped section, an internal shank carried by the box-like section and projecting from the inner end thereof, a pin carried by the U-shaped section and extending through the box-like section, and a spiral spring located inside of the box-like section and surrounding said shank, said spring abutting against the inner end of the box-like section at one end and pin at the other,-and said shank against said and pin serving to limit the relative move- I ment ofsaid section and preventvover-eem-- presslon of said spring.

iiii m In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

Witnesses: WILLIAM F. NICKEL,

P ILIP D, RoLLHAUs.

WALTER 'TUsTEiI. i 

